320840147 has 4 divisors (see below), whose sum is σ = 320876400. Its totient is φ = 320803896.

The previous prime is 320840131. The next prime is 320840197. The reversal of 320840147 is 741048023.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 320840147 - 2⁴ = 320840131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320840197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4898 + ... + 25800.

It is an arithmetic number, because the mean of its divisors is an integer number (80219100).

Almost surely, 2^320840147 is an apocalyptic number.

320840147 is a deficient number, since it is larger than the sum of its proper divisors (36253).

320840147 is a wasteful number, since it uses less digits than its factorization.

320840147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36252.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 320840147 is about 17912.0112494382. The cubic root of 320840147 is about 684.5884518874.

The spelling of 320840147 in words is "three hundred twenty million, eight hundred forty thousand, one hundred forty-seven".